microcontroller - UART in LPC1778 not working -

i trying send byte using uart1 in lpc1778 (i'm using keil simulator).

however i'm not able send byte; after detailed debugging, came conclusion data not getting written in uart1->thr register.

this code snipped transmission:

void uart1_tra(uint8_t x) {     lpc_uart1->thr=x;     //after line ,irrespective of value of x, uart1->thr remains @      value equal 0               while(1)     {         if(lpc_uart1->lsr&(1<<5))         {             break;         }     } } 

initialization code:

void uar1_init(void)  {     lpc_sc->pconp|=1u<<4;      lpc_sc->pclksel|=1u;      lpc_uart1->lcr|=1u<<7;      lpc_uart1->dll|=0x05; //set baud rate      lpc_uart1->fdr|= 0x21; //end of baud rate calculations     lpc_uart1->lcr&=~(1u<<7);//disable dlab      lpc_uart1->lcr|=3u;//8-bitcharacter length      lpc_uart1->fcr|=1u; //enable fifo reg      lpc_uart1->fcr|=(0x03<<1);//reset rxbuffers      //lpc_uart1->ier|=3u;//to enable interrupts      lpc_iocon->p0_15|=1u;      lpc_iocon->p0_16|=1;  }